Middle River WWTP
Middle River, MN · Marshall County · Publicly Owned Treatment Works
- Average flow
- 0.08 MGD
- Design flow
- 0.04 MGD
- NPDES permit
- 3603822427
- Effective
- Permit expires
- November 2028
Treatment technology
Treatment structures identified at this facility. Exact unit counts are available in Klarifi.
Uncovered lagoons
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Compliance snapshot (last 3 years)
- Total violations
- 23
- Effluent violations
- 5
Based on NPDES Discharge Monitoring Reports. Full violation history, parameters and discharge data available in the Klarifi platform.
Key contacts
Contacts for Middle River WWTP are available in the Klarifi platform.
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Names, validated emails and direct phone numbers for decision-makers at Middle River WWTP — plus full compliance history and discharge data.
Try Klarifi freeNearby wastewater treatment plants in Minnesota
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0.15 MGD
Karlstad · 20 mi away
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Greenbush · 21 mi away
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Thief River Falls · 21 mi away
9.56 MGD
Goodridge · 26 mi away
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Badger · 27 mi away
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Saint Hilaire · 28 mi away
0.37 MGD
Thief River Falls · 29 mi away
0.2 MGD
Data sourced from public EPA / NPDES records and Klarifi analysis. Last updated November 2025.